2003年中国部分沿海地区零售海产品中副溶血性弧菌污染状况的主动监测

Active surveillance on Vibrio parahaemolyticus in retail seafoods from coastal areas of China in 2003

国家食源性疾病监测网发现 ,我国近年来副溶血性弧菌中毒呈显著上升趋势。为进一步了解零售海产品中副溶血性弧菌 (VP)的污染情况 ,2 0 0 3年 9～ 12月在我国沿海 4个省份 (浙江、江苏、广东、福建 )进行监测 ,试样分别从水产品批发市场、零售市场和饭店采集 ,共采集海产品 2 36份 ,其中甲壳类 6 9份、贝类 116份、鱼类 5 1份。采用Vitek鉴定系统和最可能数 (MPN)法进行副溶血性弧菌的定性和定量分析。结果显示 ,38 6 %的海产品检出VP ,浙江省试样的VP阳性率最高。甲壳类、贝类和鱼类试样VP阳性率分别为 4 9 3%、37 9%和 2 5 5 % ;阳性试样几何平均分布浓度依次为 171 4、76 9和 5 0 7MPN 10 0g。监测结果表明 ,我国零售海产品中副溶血性弧菌的污染率较高 ,必须持续地进行食品中VP的主动监测和污染控制。

According to the data collected by the National Foodborne Diseases Surveillance Network, the food poisoning caused by Vibrio parahaemolyticus is going up in China recent years. In order to get more information about the V. parahaemolyticus contamination in retail seafoods, 236 samples, including sea crustacean (69), shellfish (116) and fish (51) were collected from the seafood wholesale markets (9), retail markets (128) and hotels (99) in four coastal provinces, Zhejiang, Jiangsu, Guangdong and Fujian in China within the period from September to December 2003. The V. parahaemolyticus in seafood samples was determined qualitatively and quantitatively by the Vitek identification system and the most probable number (MPN) technique. V. parahaemolyticus was isolated from 38 6% of all the samples (91/236). A significantly larger number of positive findings involved the samples collected from Zhejiang Province. Incidence of V. parahaemolyticus in crustacean, shellfish and fish were 49 3%, 37 9% and 25 5%, respectively, with the mean densities of V. parahaemolyticus in positive samples 171 4, 76 9, and 50 7 MPN per 100 grams, respectively. High frequency of V. parahaemolyticus was detected in retail seafoods. It is concluded that this organism needs to be intensively monitored and controlled in raw seafoods.